You have no information about Tiny4412 here. http://www.friendlyarm.net/products/tiny4412 So I found more detailed descrition here: http://www.aliexpress.com/item/FriendlyARM-Exynos-A9-Quad-core-TINY4412-... http://www.aliexpress.com/item/FriendlyARM-Exynos-Cortex-A9-Quad-core-TI... I look that exist two variant of this board. Simplified version is enough for me, but it really doesn't support ADB connection for Android. It has no USB micro connector, but why it is not possible to use normal USB (1 of 3) connector for ADB? And second question. Has Android on the board support for ADK (Accessory Development Kit). I mean Android Open Accessory protocol. It require special API on the Android side which is optional, as I think. I need to communicate with Arduino Mega ADK. Or exist any other way?
Tiny4412 ADB&ADK support
The Tiny4412 have two version, and the standard board don't support the ADB debug with the USB device, but it can support ADB debug with the ethernet. You can get more details from follow website: http://armbest.com/Tiny4412_Develop%20Manual.html